Portable sign having elongate side panels



FIG. 1 is a perspective view of an ornamental design for a portable sign having elongate side panels in accordance with the present disclosure;

FIG. 2 is a front elevation view of the portable sign having elongate side panels shown in FIG. 1;

FIG. 3 is a right side elevation view of the portable sign having elongate side panels shown in FIG. 1;

FIG. 4 is a left side elevation view of the portable sign having elongate side panels shown in FIG. 1;

FIG. 5 is a rear elevation view of the portable sign having elongate side panels shown in FIG. 1; and,

FIG. 6 is a top plan view of the portable sign having elongate side panels shown in FIG. 1.

The broken lines shown on FIGS. 1-6 show unclaimed detail only and form no part of the claimed design. 

The ornamental design for a portable sign having elongate side panels, as shown and described. 